Putting mirror



FIG. 1 is a perspective view of a putting mirror according to my new and ornamental design;

FIG. 2 is top plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is front elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the putting mirror that form no part of the claim. 

CLAIM The ornamental design for a putting mirror, as shown and described. 